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Income tax is a tax on an individual’s income over the course of a tax year (6 April to 5 April the following year). Income tax is the UK Government’s largest single source of tax revenue.
In this publication Income tax receipt figures show annual Income Tax receipts and Income tax credits and repayments (other than those made through Self Assessment). Receipts are broken down according to the way in which tax is collected (through Pay As You Earn, Self Assessment etc). Tax credits are broken down by type of credit and repayments are broken by type of repayment.